Mercedes OM651 Engine 300000km Reliability Assessment
Mercedes-Benz
E-Class
2009
OM651 2.2 CDI
⚡ Quick Summary
Severity Level
Low
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟢 Low Priority
The OM651 2.2 CDI is capable of 300,000+ km with proper maintenance. Key items for longevity: EGR valve clean every 60,000 km, injector seal inspection every 80,000 km, EGR cooler pressure test every 60,000 km and DPF forced regen when indicated.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz E-Class 2009 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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